WO2021052246A1 - Procédé de configuration de mesure, terminal et station de base - Google Patents

Procédé de configuration de mesure, terminal et station de base Download PDF

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Publication number
WO2021052246A1
WO2021052246A1 PCT/CN2020/114697 CN2020114697W WO2021052246A1 WO 2021052246 A1 WO2021052246 A1 WO 2021052246A1 CN 2020114697 W CN2020114697 W CN 2020114697W WO 2021052246 A1 WO2021052246 A1 WO 2021052246A1
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WIPO (PCT)
Prior art keywords
resource
resources
interference measurement
channel measurement
measurement
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PCT/CN2020/114697
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English (en)
Chinese (zh)
Inventor
李岩
王飞
金婧
王启星
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中国移动通信有限公司研究院
中国移动通信集团有限公司
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Application filed by 中国移动通信有限公司研究院, 中国移动通信集团有限公司 filed Critical 中国移动通信有限公司研究院
Priority to AU2020348730A priority Critical patent/AU2020348730B2/en
Priority to EP20865297.4A priority patent/EP4033800B1/fr
Priority to JP2022517483A priority patent/JP7324367B2/ja
Priority to CA3151592A priority patent/CA3151592C/fr
Priority to US17/641,583 priority patent/US20220303801A1/en
Publication of WO2021052246A1 publication Critical patent/WO2021052246A1/fr

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W24/00—Supervisory, monitoring or testing arrangements
    • H04W24/02—Arrangements for optimising operational condition
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W24/00—Supervisory, monitoring or testing arrangements
    • H04W24/08—Testing, supervising or monitoring using real traffic
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B17/00—Monitoring; Testing
    • H04B17/30—Monitoring; Testing of propagation channels
    • H04B17/309—Measuring or estimating channel quality parameters
    • H04B17/336—Signal-to-interference ratio [SIR] or carrier-to-interference ratio [CIR]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0048—Allocation of pilot signals, i.e. of signals known to the receiver
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/0091—Signaling for the administration of the divided path
    • H04L5/0094—Indication of how sub-channels of the path are allocated
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W24/00—Supervisory, monitoring or testing arrangements
    • H04W24/10—Scheduling measurement reports ; Arrangements for measurement reports
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/50—Allocation or scheduling criteria for wireless resources
    • H04W72/53—Allocation or scheduling criteria for wireless resources based on regulatory allocation policies
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
    • H04B7/06—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station
    • H04B7/0613—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission
    • H04B7/0615—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission of weighted versions of same signal
    • H04B7/0619—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission of weighted versions of same signal using feedback from receiving side
    • H04B7/0621—Feedback content
    • H04B7/0632—Channel quality parameters, e.g. channel quality indicator [CQI]

Definitions

  • the present disclosure relates to the field of mobile communication technology, and in particular to a measurement configuration method, terminal and base station.
  • the network side When performing downlink beam measurement, the network side usually sends channel state information reference signal (Channel State Information Reference Signal, CSI-RS) or synchronization signal block (Synchronization Signal Block, SSB), and the user equipment (User Equipment, UE) passes different
  • CSI-RS Channel State Information Reference Signal
  • SSB Synchronization Signal Block
  • the receiving beam is received, so as to measure and obtain the layer 1 reference signal received power (Layer 1-Reference Signal Received Power, L1-RSRP) value of the CSI-RS/SSB under each receiving beam.
  • L1-RSRP Layer 1-Reference Signal Received Power
  • the current beam measurement only considers L1-RSRP, and the beam quality selected based on this does not reflect the interference situation of the beam and cannot meet the communication requirements.
  • At least one embodiment of the present disclosure provides a measurement configuration method, a terminal, and a network device to configure resources for channel measurement and interference measurement for the terminal, which can provide more measurement resources for beam quality measurement.
  • At least one embodiment provides a measurement configuration method applied to a terminal, including:
  • Receive resource configuration information for channel measurement and interference measurement sent by the base station where the resource configuration information includes N channel measurement resources and M interference measurement resources, where N and M are both integers greater than or equal to 1.
  • the channel measurement resource is CSI-RS or SSB
  • the interference measurement resource is CSI-RS
  • the above method further includes:
  • the resource configuration information measure the channel measurement resource and the interference measurement resource, and calculate at least one L1-SINR according to the measurement result of the channel measurement resource and the interference measurement resource.
  • the above method further includes:
  • the L1-SINR is calculated from the measurement results of the channel measurement resource and the interference measurement resource with the QCL-Type D relationship.
  • the above method further includes:
  • the L1-SINR is calculated from the measurement result of the channel measurement resource and the interference measurement resource using the same spatial filtering or QCL-Type D as the channel measurement resource.
  • the above method further includes:
  • the M is equal to N, and the N channel measurement resources and the N interference measurement resources correspond one-to-one in a predetermined order.
  • the calculating at least one L1-SINR according to the measurement result of the channel measurement resource and the interference measurement resource includes:
  • At least one L1-SINR is calculated according to the measurement results of the channel measurement resources and interference measurement resources corresponding to each other in the same receiving direction.
  • reporting the identification ID of the L1-SINR and its corresponding channel measurement resource and/or the identification ID of the interference measurement resource to the base station includes:
  • Y L1-SINRs are selected from the at least one L1-SINR, and the selected Y L1-SINRs and their corresponding channel measurement resource identification IDs and/or interference measurement resource identification IDs are reported to the base station, so Said Y is an integer greater than or equal to 1.
  • the N channel measurement resources are located before the M interference measurement resources in the time domain.
  • calculating at least one L1-SINR according to the measurement result of the channel measurement resource and the interference measurement resource includes:
  • the at least one L1-SINR is calculated.
  • reporting the identification ID of the L1-SINR and its corresponding channel measurement resource and/or the identification ID of the interference measurement resource to the base station includes:
  • Z L1-SINRs are selected from the at least one L1-SINR, and the selected Z L1-SINRs and their corresponding channel measurement resource identification IDs and interference measurement resource identification IDs are reported to the base station. Is an integer greater than or equal to 1.
  • the M interference measurement resources include N first interference measurement resources and S second interference measurement resources, and the N channel measurement resources and the N first interference measurement resources are in a predetermined order There is a one-to-one correspondence, and the N channel measurement resources are located before the S second interference measurement resources in the time domain.
  • the calculating at least one L1-SINR according to the measurement result of the channel measurement resource and the interference measurement resource includes:
  • the at least one L1-SINR is calculated.
  • reporting the identification ID of the L1-SINR and its corresponding channel measurement resource and/or the identification ID of the second interference measurement resource to the base station includes:
  • Select L L1-SINR from the at least one L1-SINR, and report the selected L L1-SINR and the identification ID of the corresponding channel measurement resource and the identification ID of the second interference measurement resource to the base station, so Said L is an integer greater than or equal to 1.
  • the embodiment of the present disclosure also provides a measurement configuration method, which is applied to a base station, and includes:
  • resource configuration information used for channel measurement and interference measurement to the terminal, where the resource configuration information includes N channel measurement resources and M interference measurement resources, where N and M are both integers greater than or equal to 1.
  • the channel measurement resource is CSI-RS or SSB
  • the interference measurement resource is CSI-RS
  • the above method further includes:
  • the above method further includes:
  • first QCL configuration information is used to configure QCL-Type D information of channel measurement resources and QCL-Type D information of interference measurement resources;
  • the L1-SINR is calculated from the measurement results of the channel measurement resource and the interference measurement resource with the QCL-Type D relationship.
  • the above method further includes:
  • the L1-SINR is calculated from the measurement result of the channel measurement resource and the interference measurement resource using the same spatial filtering or QCL-Type D as the channel measurement resource.
  • the M is equal to N, and the N channel measurement resources and the N interference measurement resources correspond one-to-one in a predetermined order.
  • the N channel measurement resources are located before the M interference measurement resources in the time domain.
  • the M interference measurement resources include N first interference measurement resources and S second interference measurement resources, and the N channel measurement resources and the N first interference measurement resources are in a predetermined order There is a one-to-one correspondence, and the N channel measurement resources are located before the S second interference measurement resources in the time domain.
  • the embodiment of the present disclosure also provides a terminal, including:
  • the receiving module is configured to receive resource configuration information for channel measurement and interference measurement sent by the base station, where the resource configuration information includes N channel measurement resources and M interference measurement resources, where both N and M are greater than or equal to An integer of 1.
  • the embodiment of the present disclosure also provides a terminal, including a transceiver and a processor, wherein:
  • the transceiver is configured to receive resource configuration information for channel measurement and interference measurement sent by a base station, where the resource configuration information includes N channel measurement resources and M interference measurement resources, where both N and M are greater than Or an integer equal to 1.
  • the embodiment of the present disclosure also provides a terminal, including: a processor, a memory, and a program stored on the memory and capable of running on the processor, and when the program is executed by the processor, the above The steps of the measurement configuration method.
  • the embodiment of the present disclosure also provides a base station, including:
  • the sending module is used to send resource configuration information for channel measurement and interference measurement to the terminal, where the resource configuration information includes N channel measurement resources and M interference measurement resources, where both N and M are greater than or equal to 1. Integer.
  • the embodiment of the present disclosure also provides a base station, including a transceiver and a processor, wherein:
  • the transceiver is configured to send resource configuration information for channel measurement and interference measurement to the terminal, where the resource configuration information includes N channel measurement resources and M interference measurement resources, and both N and M are greater than or An integer equal to 1.
  • the embodiments of the present disclosure also provide a base station, including: a processor, a memory, and a program stored on the memory and capable of running on the processor, and when the program is executed by the processor, the above The steps of the measurement configuration method.
  • At least one embodiment provides a computer-readable storage medium with a program stored on the computer-readable storage medium, and when the program is executed by a processor, it implements the method described above. step.
  • the measurement configuration method, terminal, and base station provided by the embodiments of the present disclosure can configure resources for channel measurement and interference measurement for the terminal, thereby providing more measurement resources for beam quality measurement.
  • the embodiment of the present disclosure may also measure and report the L1-SINR of the beam based on the above-mentioned measurement resources, so that the base station can select a more suitable beam based on the L1-SINR.
  • FIG. 1 is a schematic diagram of an application scenario of an embodiment of the disclosure
  • FIG. 3 is a schematic diagram of Example 1 of resource configuration provided by an embodiment of the disclosure.
  • Example 4 is a schematic diagram of Example 1 of resource configuration provided by an embodiment of the disclosure.
  • FIG. 5 is a schematic diagram of Example 1 of resource configuration provided by an embodiment of the disclosure.
  • FIG. 6 is a flowchart when the measurement configuration method provided by an embodiment of the disclosure is applied to the base station side;
  • FIG. 7 is a schematic structural diagram of a terminal provided by an embodiment of the disclosure.
  • FIG. 8 is a schematic diagram of another structure of a terminal provided by an embodiment of the present disclosure.
  • FIG. 9 is a schematic structural diagram of a network device provided by an embodiment of the disclosure.
  • FIG. 10 is a schematic diagram of another structure of a network device provided by an embodiment of the disclosure.
  • the technology described in this article is not limited to NR systems and Long Time Evolution (LTE)/LTE-Advanced (LTE-A) systems, and can also be used in various wireless communication systems, such as code division multiple access.
  • Code Division Multiple Access CDMA
  • Time Division Multiple Access TDMA
  • Frequency Division Multiple Access FDMA
  • Orthogonal Frequency Division Multiple Access OFDMA
  • Single-carrier Frequency-Division Multiple Access SC-FDMA
  • SC-FDMA Single-carrier Frequency-Division Multiple Access
  • the terms “system” and “network” are often used interchangeably.
  • the CDMA system can implement radio technologies such as CDMA2000 and Universal Terrestrial Radio Access (UTRA).
  • UTRA includes Wideband Code Division Multiple Access (WCDMA) and other CDMA variants.
  • the TDMA system can implement radio technologies such as the Global System for Mobile Communication (GSM).
  • GSM Global System for Mobile Communication
  • the OFDMA system can implement radios such as UltraMobile Broadband (UMB), Evolved UTRA (Evolution-UTRA, E-UTRA), IEEE802.21 (Wi-Fi), IEEE802.16 (WiMAX), IEEE802.20, Flash-OFDM, etc. technology.
  • UMB UltraMobile Broadband
  • Evolved UTRA Evolved UTRA
  • E-UTRA Evolved UTRA
  • IEEE802.21 Wi-Fi
  • WiMAX IEEE802.16
  • IEEE802.20 Flash-OFDM
  • Flash-OFDM Flash-OFDM
  • UTRA, E-UTRA, UMTS, LTE, LTE-A, and GSM are described in documents from an organization named "3rd Generation Partnership Project” (3GPP).
  • CDMA2000 and UMB are described in documents from an organization named “3rd Generation Partnership Project 2" (3GPP2).
  • the techniques described in this article can be used for the systems and radio technologies mentioned above, as well as other systems and radio technologies.
  • the following description describes the NR system for exemplary purposes, and NR terminology is used in most of the following description, although these techniques can also be applied to applications other than NR system applications.
  • FIG. 1 shows a block diagram of a wireless communication system to which an embodiment of the present disclosure can be applied.
  • the wireless communication system includes a terminal 11 and a network device 12.
  • the terminal 11 may also be called a user terminal or a user equipment (UE), and the terminal 11 may be a mobile phone, a tablet (Personal Computer), a laptop (Laptop Computer), or a personal digital assistant (Personal Digital Assistant).
  • PDA mobile Internet device
  • MID mobile Internet Device
  • Wearable Device wearable device
  • vehicle-mounted device it should be noted that the specific type of terminal 11 is not limited in the embodiments of the present disclosure .
  • the network device 12 may be a base station and/or a core network element, where the above-mentioned base station may be a base station of 5G and later versions (for example: gNB, 5G NR NB, etc.), or a base station in other communication systems (for example: eNB, WLAN Access point, or other access points, etc.), where the base station can be called Node B, Evolved Node B, Access Point, Base Transceiver Station (BTS), Radio Base Station, Radio Transceiver, Basic Service Set (Basic Service Set, BSS), Extended Service Set (Extended Service Set, ESS), Node B, Evolved Node B (eNB), Home Node B, Home Evolved Node B, WLAN Access Point, WiFi Node or As long as some other suitable terminology in the field achieves the same technical effect, the base station is not limited to a specific technical vocabulary. It should be noted that in the embodiments of the present disclosure, only the base station in the NR system is taken as an example, but not The specific
  • the base station may communicate with the terminal 11 under the control of the base station controller.
  • the base station controller may be a part of the core network or some base stations. Some base stations can communicate control information or user data with the core network through the backhaul. In some examples, some of these base stations may directly or indirectly communicate with each other through a backhaul link, which may be a wired or wireless communication link.
  • the wireless communication system can support operations on multiple carriers (waveform signals of different frequencies). Multi-carrier transmitters can simultaneously transmit modulated signals on these multiple carriers. For example, each communication link may be a multi-carrier signal modulated according to various radio technologies. Each modulated signal can be sent on a different carrier and can carry control information (for example, reference signals, control channels, etc.), overhead information, data, and so on.
  • the base station may perform wireless communication with the terminal 11 via one or more access point antennas. Each base station can provide communication coverage for its corresponding coverage area. The coverage area of an access point can be divided into sectors that constitute only a part of the coverage area.
  • the wireless communication system may include different types of base stations (for example, a macro base station, a micro base station, or a pico base station).
  • the base station can also utilize different radio technologies, such as cellular or WLAN radio access technologies.
  • the base stations can be associated with the same or different access networks or operator deployments.
  • the coverage areas of different base stations may overlap.
  • the communication link in the wireless communication system may include an uplink for carrying uplink (UL) transmission (for example, from the terminal 11 to the network device 12), or for carrying a downlink (DL) Transmission (e.g., from the network device 12 to the terminal 11) downlink.
  • UL transmission may also be referred to as reverse link transmission
  • DL transmission may also be referred to as forward link transmission.
  • Downlink transmission can use licensed frequency bands, unlicensed frequency bands, or both.
  • uplink transmission can be performed using licensed frequency bands, unlicensed frequency bands, or both.
  • L1-RSRP Low-Reliable and Low-Reliable NR
  • L1-SINR Layer 1-Signal to Interference plus Noise Ratio
  • a measurement configuration method provided by an embodiment of the present disclosure when applied to the terminal side, includes:
  • Step 21 Receive resource configuration information for channel measurement and interference measurement sent by the base station, where the resource configuration information includes N channel measurement resources and M interference measurement resources, where both N and M are greater than or equal to 1. Integer.
  • the channel measurement resource may be CSI-RS or SSB, and the interference measurement resource may be CSI-RS.
  • the interference measurement resource may be a non-zero power (NZP) CSI-RS or a zero power (ZP) CSI-RS.
  • the embodiment of the present disclosure configures the terminal with channel measurement resources for channel measurement and interference measurement resources for interference measurement.
  • the terminal can measure and report the L1-SINR of the beam based on the above measurement resources.
  • a more suitable beam can be selected based on the L1-SINR.
  • the terminal may also measure the channel measurement resources and interference measurement resources according to the resource configuration information, and calculate at least one L1 according to the measurement results of the channel measurement resources and interference measurement resources. -SINR.
  • the terminal may also receive first Quasi Co-Location (QCL) configuration information sent by the base station, where the first QCL configuration information is used to configure channel measurement resources.
  • QCL-Type D information and QCL-Type D information of interference measurement resources are calculated from the measurement results of the channel measurement resource and the interference measurement resource with the QCL-Type D relationship.
  • QCL refers to the quasi co-location relationship.
  • the quasi co-location of antenna ports is a state assumption between antenna ports. If one antenna port is quasi-co-located with another antenna port, it means that the terminal can assume that the large-scale characteristics of the signal received from one of the antenna ports (or the radio channel corresponding to the antenna port) are wholly or partially different from the other antenna port. The large-scale characteristics of the signal received by the port (or the radio channel corresponding to the antenna port) are the same. In other words, the channel characteristics on a certain antenna port symbol can be derived from another antenna port, and it is considered that the channel estimation results obtained from one port of the two port QCLs can be used for the other port.
  • QCL defines the following types, namely QCL-Type A, QCL-Type B, QCL-Type C, and QCL-Type D.
  • QCL-Type D is the quasi co-location relationship of spatial receiving parameters.
  • the terminal may also receive second QCL configuration information sent by the base station, where the second QCL configuration information is used to configure QCL-Type D information of the channel measurement resource; the L1- The SINR is calculated from the measurement result of the channel measurement resource and the interference measurement resource using the same spatial filtering or QCL-Type D as the channel measurement resource.
  • the terminal may report the identification (ID) of the L1-SINR and its corresponding channel measurement resource and/or the ID of the interference measurement resource to the base station. Specifically, the ID of the channel measurement resource corresponding to L1-SINR and L1-SINR can be reported, the ID of the interference measurement resource corresponding to L1-SINR and L1-SINR can also be reported, and the L1-SINR and L1-SINR can also be reported. The ID of the corresponding channel measurement resource and the ID of the interference measurement resource. In addition, the L1-SINR reported here may be all or part of the calculated L1-SINR of the at least one L1-SINR. When reporting part of L1-SINR, the terminal may select part of L1-SINR for reporting according to the order of L1-SINR from large to small.
  • Example 1 The M is equal to N, and the N channel measurement resources and the N interference measurement resources are in a one-to-one correspondence in a predetermined order.
  • the terminal when the terminal obtains at least one L1-SINR according to the measurement results of the channel measurement resource and the interference measurement resource, it can specifically use the same receiving direction to measure the channel measurement resources and interference measurement resources corresponding to each other. Perform measurement, where different channel measurement resources use different receiving directions; and, according to the measurement results of the channel measurement resources and interference measurement resources corresponding to each other in the same receiving direction, at least one L1-SINR is calculated.
  • the terminal may select Y L1-SINRs from the at least one L1-SINR, and set the selected The Y L1-SINR and the ID of the corresponding channel measurement resource and/or the ID of the interference measurement resource are reported to the base station, and the Y is an integer greater than or equal to 1. For example, according to the order of L1-SINR from large to small, the first Y L1-SINRs are selected.
  • Y can be a predetermined value or a value configured by the base station.
  • the base station configures N channel measurement resources and N interference measurement resources, and the channel measurement resources and interference measurement resources correspond to each other in a certain order to calculate the L1-SINR, and the terminal receives each pair of channels The same receiving beam is used for measurement resources and interference measurement resources.
  • the beneficial effects of this example 1 are at least: it is used for the base station to determine the optimal receiving beam, especially after the base station has certain prior information, it is hoped that the terminal will perform a more accurate L1-SINR measurement again, so as to determine the best one.
  • the receive beam For example, the base station already has some measurement results of the beam (such as CQI/RSRP, etc.). Based on this, the base station hopes to make more accurate pairing, and can configure the above channel measurement resources and interference measurement resources for the terminal.
  • Figure 3 shows a specific resource configuration scheme of this example 1, where the base station configures 4 channel measurement resources (CMR) for the terminal, the IDs of which are CMR 0 ⁇ CMR 3) and 4 interference measurement resources IMR.
  • the IDs are IMR 0 ⁇ IMR 3.
  • Figure 3 shows the positional relationship of the above-mentioned resources in the time domain. It can be seen that the time domain positions of the channel measurement resource and the interference measurement resource of the same ID are the same.
  • the terminal determines the one-to-one correspondence between CMR and IMR in the order of the resource IDs of CMR and IMR. Specifically, CMR 0 corresponds to IMR 0, CMR 1 corresponds to IMR 1, CMR 2 corresponds to IMR 2, and CMR 3 corresponds to IMR 3.
  • the embodiments of the present disclosure may also define the corresponding relationship in other ways, and it is only necessary that the terminal and the base station determine the above-mentioned corresponding relationship in the same way.
  • the terminal can use different receiving beams, such as Beam 0 ⁇ Beam 3, to measure the above-mentioned channel measurement resources and interference measurement resources. Among them, the channel measurement resources and interference measurement resources corresponding to each other will be measured using the same receiving beam. In this way, the terminal The L1-SINR corresponding to the 4 pairs of CMR and IMR can be measured and calculated, which represents the L1-SINR of the 4 receiving beam directions.
  • the reporting format 1 that the terminal can use includes:
  • L1-SINR L1-SINR and its corresponding channel measurement resource ID and interference measurement resource ID.
  • the L1-SINR reported by the terminal may be the L1-SINR with the largest value, or may report Y channel measurement resource IDs and their corresponding Y L1-SINRs.
  • the format of differential reporting can be adopted.
  • Example 2 The N channel measurement resources are located before the M interference measurement resources in the time domain.
  • Example 2 when the terminal obtains at least one L1-SINR according to the measurement results of the channel measurement resource and the interference measurement resource, it may specifically use different receiving directions to measure the N channel measurement resources.
  • Obtain the first measurement result which may be the received signal strength
  • select X channel measurement resources according to the obtained first measurement result for example, select the X channel measurement resources in descending order of the received signal strength X receive beams.
  • the at least one L1-SINR is calculated.
  • the terminal may select Z L1-SINR from the at least one L1-SINR, and set the selected The Z L1-SINRs and the identification ID of the corresponding channel measurement resource and the identification ID of the interference measurement resource are reported to the base station, and the Z is an integer greater than or equal to 1. For example, according to the order of L1-SINR from large to small, the first Z L1-SINRs are selected.
  • Z can be a predetermined value or a value configured by the base station.
  • the base station configures N channel measurement resources and M interference measurement resources, and the channel measurement resources and interference measurement resources can be transmitted staggered in the time domain in a time division multiplexing (TDM) manner.
  • the terminal first measures the channel measurement resources, determines X receive beam directions according to the measurement results of the channel measurement resources, and then uses the determined X receive beam directions to receive M interference measurement resources. Since there are M interference measurement resources, it can be calculated Get M L1-SINR.
  • the base station can select the CMR corresponding to a certain L1-SINR among the selected M L1-SINRs
  • the receiving beam direction of the L1-SINR is configured to UE1
  • the receiving beam direction of the IMR corresponding to the L1-SINR is configured to UE2
  • UE1 and UE2 are used as MUs, so that the interference between UE1 and UE2 can be small.
  • Figure 4 shows a specific resource configuration scheme of this example 2, where the base station configures 4 channel measurement resources (CMR) for the terminal, the IDs of which are CMR 0 ⁇ CMR 3) and 2 interference measurement resources IMR.
  • the IDs are IMR 0 ⁇ IMR 1.
  • Figure 4 shows the positional relationship of the above-mentioned resources in the time domain. It can be seen that the time domain positions of the channel measurement resources and the interference measurement resources are different.
  • the terminal can use different receiving beams, such as Beam 0 ⁇ Beam 3, to measure the above-mentioned channel measurement resources respectively, and then, according to the order of RSRP size, select the largest X (assuming 1 here) receiving beams corresponding to the RSRP ( Assuming Beam 1), use the receiving beam Beam 1 to receive interference measurement resources IMR 0 to IMR 1, and then use the channel measurement resources measured by the receiving beam and the measurement results of the interference measurement resources to calculate the M L1-SINRs (Here are 2 L1-SINR).
  • the reporting format 2 that the terminal can use includes:
  • L1-SINR L1-SINR and its corresponding channel measurement resource ID and interference measurement resource ID.
  • the L1-SINR reported by the terminal may be the L1-SINR with the largest value, or it may report Z channel measurement resource IDs and their corresponding channel measurement resource IDs and interference measurement resource IDs.
  • the format of differential reporting can be adopted.
  • the M interference measurement resources include N first interference measurement resources and S second interference measurement resources, and the N channel measurement resources correspond to the N first interference measurement resources one-to-one in a predetermined order, and , The N channel measurement resources are located before the S second interference measurement resources in the time domain.
  • the terminal when it obtains at least one L1-SINR according to the measurement results of the channel measurement resource and the interference measurement resource, it may specifically: adopt the same receiving direction, and perform the corresponding channel measurement resource and the first L1-SINR.
  • Interference measurement resources are used for measurement, where different channel measurement resources use different receiving directions. According to the measurement results of the channel measurement resource and the first interference measurement resource corresponding to each other in the same receiving direction, more than one L1-SINR is calculated.
  • P L1-SINRs are selected from the one or more L1-SINRs, and P receiving directions corresponding to the P L1-SINRs are determined, where P is an integer greater than or equal to 1, for example, according to LI-SINR Select P L1-SINRs in order from the largest to the smallest.
  • the P receiving directions are used to measure the S second interference measurement resources; according to the measurement results of the channel measurement resources and the second interference measurement resources in the same receiving direction, the at least one L1- SINR.
  • the terminal may select L L1-SINR from the at least one L1-SINR, and set the selected The L L1-SINR and the identification ID of the corresponding channel measurement resource and the identification ID of the second interference measurement resource are reported to the base station, and the L is an integer greater than or equal to 1. For example, according to the order of L1-SINR from large to small, the first L L1-SINRs are selected.
  • L can be a predetermined value or a value configured by the base station.
  • the base station configures N CMRs, N first IMRs, and S second IMRs.
  • the N CMRs and N first IMRs are in a one-to-one correspondence with the N first IMRs in a certain order, and the CMRs and the second IMRs Need to stagger the transmission of TDM in the time domain.
  • the terminal first performs measurement based on the N CMRs and the N first IMRs, calculates the N first L1-SINRs based on the measurement results of the corresponding CMRs and the first IMRs, and selects P according to the N first L1-SINRs First L1-SINR, and determine the P receiving directions corresponding to the P first L1-SINR, and then use the P receiving directions to measure the S second IMRs, and according to the same receiving direction Next, the measurement results of the CMR and the second IMR are calculated to obtain S L1-SINRs.
  • Figure 5 shows a specific resource configuration scheme of this example 3.
  • the base station configures 4 channel measurement resources (CMR) for the terminal, the IDs of which are CMR 0 ⁇ CMR 3) and 6 interference measurement resources IMR.
  • the IDs are IMR 0 ⁇ IMR 5.
  • Figure 5 shows the positional relationship of the above resources in the time domain. It can be seen that the channel measurement resources are different from the time domain positions of IMR 4 to IMR 5.
  • the terminal can use different receiving beams, such as Beam 0 ⁇ Beam 3 to measure the aforementioned CMR 0 ⁇ CMR 3 and IMR 0 ⁇ IMR 3 respectively. Among them, the channel measurement resources and interference measurement resources corresponding to each other will be performed using the same receiving beam. Measurement.
  • the terminal can measure and calculate the L1-SINR corresponding to the 4 pairs of CMR and IMR, which represents the L1-SINR of the 4 receive beam directions. Then, according to the order of L1-SINR size, select the largest P (assuming one here) receiving beam (assuming Beam 1) corresponding to the RSRP, and use the receiving beam Beam 1 to receive interference measurement resources IMR4 ⁇ IMR5 Then, the measurement results of the channel measurement resource CMR 1 and the interference measurement resources IMR 4 to IMR 5 measured by the receiving beam are used to calculate the two L1-SINRs.
  • the reporting format 3 that the terminal can adopt is similar to the reporting format 2 of Example 2.
  • Figure 6 shows the flow of a measurement configuration method provided by an embodiment of the present disclosure when applied to the base station side, including:
  • Step 61 Send resource configuration information for channel measurement and interference measurement to the terminal, where the resource configuration information includes N channel measurement resources and M interference measurement resources, where N and M are both integers greater than or equal to 1. .
  • the channel measurement resource may be CSI-RS or SSB, and the interference measurement resource may be CSI-RS.
  • the interference measurement resource may be a non-zero power (NZP) CSI-RS or a zero power (ZP) CSI-RS.
  • the base station in the embodiment of the present disclosure configures the terminal with channel measurement resources for channel measurement and interference measurement resources for interference measurement.
  • the terminal can measure the L1-SINR of the beam based on the above measurement resources. For reporting, a more suitable beam can be selected based on the L1-SINR.
  • the base station may also receive the L1-SINR and the ID of the corresponding channel measurement resource and/or the ID of the interference measurement resource reported by the terminal.
  • the base station may configure a receiving beam for the terminal based on the L1-SINR reported by the terminal and the ID of the corresponding channel measurement resource and/or the ID of the interference measurement resource, for example, set the maximum L1-SINR
  • the corresponding terminal receiving beam is configured as the receiving beam of the terminal.
  • the base station may also send first quasi co-location (Quasi Co-Location, QCL) configuration information to the terminal, where the first QCL configuration information is used to configure the QCL of the channel measurement resource -Type D information and QCL-Type D information of interference measurement resources.
  • QCL quasi co-location
  • the L1-SINR is calculated from the measurement results of the channel measurement resource and the interference measurement resource with the QCL-Type D relationship.
  • the base station may also send second QCL configuration information to the terminal, where the second QCL configuration information is used to configure QCL-Type D information of the channel measurement resource; the L1-SINR It is calculated from the measurement result of the channel measurement resource and the interference measurement resource using the same spatial filtering or QCL-Type D as the channel measurement resource.
  • the M is equal to N
  • the N channel measurement resources and the N interference measurement resources are in one-to-one correspondence in a predetermined order.
  • the N channel measurement resources are located before the M interference measurement resources in the time domain.
  • the M interference measurement resources include N first interference measurement resources and S second interference measurement resources, and the N channel measurement resources are related to the N first interference measurement resources.
  • the measurement resources correspond one-to-one in a predetermined order, and the N channel measurement resources are located before the S second interference measurement resources in the time domain.
  • the base station when it performs multi-user pairing for multi-user-multiple-input-multiple-output (MU-MIMO), it can be based on the L1-SINR reported by the terminal and its corresponding channel measurement resource ID and/or interference measurement resource ID, configure the receive beam direction of the CMR corresponding to the same L1-SINR in the reported L1-SINR to the terminal, and configure the receive beam direction of the IMR corresponding to the L1-SINR to another terminal.
  • the other terminal and the terminal belong to the same multi-user pair (MU).
  • the embodiments of the present disclosure also provide a device for implementing the above method.
  • an embodiment of the present disclosure provides a terminal 70, including:
  • the receiving module 70 is configured to receive resource configuration information for channel measurement and interference measurement sent by the base station, where the resource configuration information includes N channel measurement resources and M interference measurement resources, where N and M are both greater than or An integer equal to 1.
  • the terminal further includes:
  • the measurement unit is configured to measure the channel measurement resource and the interference measurement resource according to the resource configuration information, and calculate at least one L1-SINR according to the measurement result of the channel measurement resource and the interference measurement resource.
  • the terminal further includes:
  • the receiving unit is further configured to receive quasi-co-located QCL configuration information sent by the base station, where the quasi-co-located QCL configuration information is used to configure channel measurement resources and interference measurement resources with a QCL-Type D relationship;
  • the L1-SINR is calculated from the measurement results of the channel measurement resource and the interference measurement resource with the QCL-Type D relationship.
  • the terminal further includes:
  • the reporting unit is configured to report the identification ID of the L1-SINR and its corresponding channel measurement resource and/or the identification ID of the interference measurement resource to the base station.
  • the M is equal to N, and the N channel measurement resources and the N interference measurement resources are in a one-to-one correspondence in a predetermined order.
  • the measurement unit is further configured to use the same receiving direction to measure the channel measurement resources and interference measurement resources corresponding to each other, where different channel measurement resources use different receiving directions; according to the same receiving direction At least one L1-SINR is calculated for the measurement results of the channel measurement resources and interference measurement resources corresponding to each other.
  • the reporting unit is further configured to select Y L1-SINRs from the at least one L1-SINR, and combine the selected Y L1-SINRs and the identification IDs and/or corresponding channel measurement resources of the Y L1-SINRs. Or the identification ID of the interference measurement resource is reported to the base station, and the Y is an integer greater than or equal to 1.
  • the N channel measurement resources are located before the M interference measurement resources in the time domain.
  • the measurement unit is further configured to use different receiving directions to measure the N channel measurement resources, and select X channel measurement resources according to the obtained first measurement result; use the X The channel measurement resource corresponds to the receiving direction, the M interference measurement resources are measured to obtain the second measurement result; the at least one measurement result is calculated according to the measurement results of the channel measurement resource and the interference measurement resource in the same receiving direction L1-SINR.
  • the reporting unit is further configured to select Z L1-SINRs from the at least one L1-SINR, and combine the selected Z L1-SINRs and the identification IDs and interferences of the corresponding channel measurement resources.
  • the identification ID of the measurement resource is reported to the base station, and the Z is an integer greater than or equal to 1.
  • the M interference measurement resources include N first interference measurement resources and S second interference measurement resources, and the N channel measurement resources are in a one-to-one correspondence with the N first interference measurement resources in a predetermined order, Moreover, the N channel measurement resources are located before the S second interference measurement resources in the time domain.
  • the measurement unit is further configured to use the same receiving direction to measure the channel measurement resource and the first interference measurement resource corresponding to each other, where different channel measurement resources use different receiving directions; For the measurement results of the corresponding channel measurement resource and the first interference measurement resource in the direction, calculate more than one L1-SINR; select P L1-SINRs from the one or more L1-SINRs, and determine the P The P receiving directions corresponding to L1-SINR, where P is an integer greater than or equal to 1; the P receiving directions are used to measure the S second interference measurement resources; and all the second interference measurement resources are measured according to the same receiving direction. The measurement results of the channel measurement resource and the second interference measurement resource are calculated to obtain the at least one L1-SINR.
  • the reporting unit is further configured to select L L1-SINR from the at least one L1-SINR, and combine the selected L L1-SINR and the identification ID of the corresponding channel measurement resource with the first L1-SINR. 2.
  • the identification ID of the interference measurement resource is reported to the base station, and the L is an integer greater than or equal to 1.
  • the terminal 800 includes a processor 801, a transceiver 802, a memory 803, a user interface 804, and a bus interface, where:
  • the terminal 800 further includes: a program that is stored in the memory 803 and can run on the processor 801.
  • a program that is stored in the memory 803 and can run on the processor 801.
  • Receive resource configuration information for channel measurement and interference measurement sent by the base station where the resource configuration information includes N channel measurement resources and M interference measurement resources, where N and M are both integers greater than or equal to 1.
  • the bus architecture may include any number of interconnected buses and bridges. Specifically, one or more processors represented by the processor 801 and various circuits of the memory represented by the memory 803 are linked together.
  • the bus architecture can also link various other circuits such as peripherals, voltage regulators, power management circuits, etc., which are all known in the art, and therefore, will not be further described herein.
  • the bus interface provides the interface.
  • the transceiver 802 may be a plurality of elements, including a transmitter and a receiver, and provide a unit for communicating with various other devices on a transmission medium.
  • the user interface 804 may also be an interface that can externally and internally connect the required equipment.
  • the connected equipment includes but not limited to a keypad, a display, a speaker, a microphone, a joystick, and the like.
  • the processor 801 is responsible for managing the bus architecture and general processing, and the memory 803 can store data used by the processor 801 when performing operations.
  • the resource configuration information measure the channel measurement resource and the interference measurement resource, and calculate at least one L1-SINR according to the measurement result of the channel measurement resource and the interference measurement resource.
  • the L1-SINR is calculated from the measurement results of the channel measurement resource and the interference measurement resource with the QCL-Type D relationship.
  • the M is equal to N, and the N channel measurement resources and the N interference measurement resources are in a one-to-one correspondence in a predetermined order.
  • At least one L1-SINR is calculated according to the measurement results of the channel measurement resources and interference measurement resources corresponding to each other in the same receiving direction.
  • Y L1-SINRs are selected from the at least one L1-SINR, and the selected Y L1-SINRs and their corresponding channel measurement resource identification IDs and/or interference measurement resource identification IDs are reported to the base station, so Said Y is an integer greater than or equal to 1.
  • the N channel measurement resources are located before the M interference measurement resources in the time domain.
  • the at least one L1-SINR is calculated.
  • Z L1-SINRs are selected from the at least one L1-SINR, and the selected Z L1-SINRs and their corresponding channel measurement resource identification IDs and interference measurement resource identification IDs are reported to the base station. Is an integer greater than or equal to 1.
  • the M interference measurement resources include N first interference measurement resources and S second interference measurement resources, and the N channel measurement resources are in a one-to-one correspondence with the N first interference measurement resources in a predetermined order, Moreover, the N channel measurement resources are located before the S second interference measurement resources in the time domain.
  • the at least one L1-SINR is calculated.
  • Select L L1-SINR from the at least one L1-SINR, and report the selected L L1-SINR and the identification ID of the corresponding channel measurement resource and the identification ID of the second interference measurement resource to the base station, so Said L is an integer greater than or equal to 1.
  • an embodiment of the present disclosure provides a schematic structural diagram of a base station 90, and the base station 90 includes:
  • the sending module 91 is configured to send resource configuration information for channel measurement and interference measurement to the terminal, where the resource configuration information includes N channel measurement resources and M interference measurement resources, where N and M are both greater than or equal to An integer of 1.
  • the base station further includes:
  • the receiving module is configured to receive the L1-SINR reported by the terminal and the identification ID of the corresponding channel measurement resource and/or the identification ID of the interference measurement resource.
  • the sending module 91 is further configured to send quasi-co-located QCL configuration information to the terminal, where the quasi-co-located QCL configuration information is used to configure channel measurement resources and interference measurement resources with a QCL-Type D relationship;
  • the L1-SINR is calculated from the measurement results of the channel measurement resource and the interference measurement resource with the QCL-Type D relationship.
  • the M is equal to N, and the N channel measurement resources and the N interference measurement resources are in a one-to-one correspondence in a predetermined order.
  • the N channel measurement resources are located before the M interference measurement resources in the time domain.
  • the M interference measurement resources include N first interference measurement resources and S second interference measurement resources, and the N channel measurement resources are in a one-to-one correspondence with the N first interference measurement resources in a predetermined order, Moreover, the N channel measurement resources are located before the S second interference measurement resources in the time domain.
  • the base station further includes:
  • the configuration module is used to perform multi-user pairing for multi-user-multiple-input multiple-output (MU-MIMO), according to the L1-SINR reported by the terminal and the ID of the corresponding channel measurement resource and/or interference measurement resource ID, configure the receive beam direction of the CMR corresponding to the same L1-SINR in the reported L1-SINR to the terminal, and configure the receive beam direction of the IMR corresponding to the L1-SINR to another terminal.
  • the other terminal and the terminal belong to the same multi-user pair (MU).
  • an embodiment of the present disclosure provides another schematic structural diagram of a base station, including: a processor 1001, a transceiver 1002, a memory 1003, and a bus interface, where:
  • the base station 1000 further includes: a program that is stored in the memory 1003 and can be run on the processor 1001, and when the program is executed by the processor 1001, the following steps are implemented:
  • resource configuration information used for channel measurement and interference measurement to the terminal, where the resource configuration information includes N channel measurement resources and M interference measurement resources, where N and M are both integers greater than or equal to 1.
  • the bus architecture may include any number of interconnected buses and bridges. Specifically, one or more processors represented by the processor 1001 and various circuits of the memory represented by the memory 1003 are linked together.
  • the bus architecture can also link various other circuits such as peripherals, voltage regulators, power management circuits, etc., which are all known in the art, and therefore, will not be further described herein.
  • the bus interface provides the interface.
  • the transceiver 1002 may be a plurality of elements, including a transmitter and a receiver, and provide a unit for communicating with various other devices on a transmission medium.
  • the processor 1001 is responsible for managing the bus architecture and general processing, and the memory 1003 can store data used by the processor 1001 when performing operations.
  • the L1-SINR is calculated from the measurement results of the channel measurement resource and the interference measurement resource with the QCL-Type D relationship.
  • the M is equal to N, and the N channel measurement resources and the N interference measurement resources are in a one-to-one correspondence in a predetermined order.
  • the N channel measurement resources are located before the M interference measurement resources in the time domain.
  • the M interference measurement resources include N first interference measurement resources and S second interference measurement resources, and the N channel measurement resources are in a one-to-one correspondence with the N first interference measurement resources in a predetermined order, Moreover, the N channel measurement resources are located before the S second interference measurement resources in the time domain.
  • the reported L1-SINR and the ID of the corresponding channel measurement resource and/or the ID of the interference measurement resource reported by the terminal -Configure the receive beam direction of the CMR corresponding to the same L1-SINR in the SINR to the terminal, and configure the receive beam direction of the IMR corresponding to the L1-SINR to another terminal.
  • the other terminal is The terminals belong to the same multi-user pair (MU).
  • the disclosed device and method may be implemented in other ways.
  • the device embodiments described above are merely illustrative, for example, the division of the units is only a logical function division, and there may be other divisions in actual implementation, for example, multiple units or components may be combined or It can be integrated into another system, or some features can be ignored or not implemented.
  • the displayed or discussed mutual coupling or direct coupling or communication connection may be indirect coupling or communication connection through some interfaces, devices or units, and may be in electrical, mechanical or other forms.
  • the units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, they may be located in one place, or they may be distributed on multiple network units. Some or all of the units may be selected according to actual needs to achieve the objectives of the solutions of the embodiments of the present disclosure.
  • the functional units in the various embodiments of the present disclosure may be integrated into one processing unit, or each unit may exist alone physically, or two or more units may be integrated into one unit.
  • the function is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a computer readable storage medium.
  • the technical solution of the present disclosure essentially or the part that contributes to the related technology or the part of the technical solution can be embodied in the form of a software product.
  • the computer software product is stored in a storage medium, including several
  • the instructions are used to make a computer device (which may be a personal computer, a server, or a base station, etc.) execute all or part of the steps of the measurement configuration method described in the various embodiments of the present disclosure.
  • the aforementioned storage media include: U disk, mobile hard disk, ROM, RAM, magnetic disk or optical disk and other media that can store program codes.

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Abstract

L'invention concerne un procédé de configuration de mesure, un terminal et une station de base. Le procédé consiste : à recevoir des informations de configuration de ressource pour une mesure de canal et une mesure d'interférence envoyées par une station de base, les informations de configuration de ressource comprenant N ressources de mesure de canal et M ressources de mesure d'interférence, aussi bien N que M étant des nombres entiers supérieurs ou égaux à 1.
PCT/CN2020/114697 2019-09-18 2020-09-11 Procédé de configuration de mesure, terminal et station de base WO2021052246A1 (fr)

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AU2020348730A AU2020348730B2 (en) 2019-09-18 2020-09-11 Measurement configuration method, terminal, and base station
EP20865297.4A EP4033800B1 (fr) 2019-09-18 2020-09-11 Procédé de configuration de mesure, terminal et station de base
JP2022517483A JP7324367B2 (ja) 2019-09-18 2020-09-11 測定構成方法、端末及び基地局
CA3151592A CA3151592C (fr) 2019-09-18 2020-09-11 Procede de configuration de mesure, terminal et station de base
US17/641,583 US20220303801A1 (en) 2019-09-18 2020-09-11 Measurement configuration method, terminal and base station

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HUAWEI, HISILICON: "Remaining issues for CSI framework", 3GPP DRAFT; R1-1800529, 3RD GENERATION PARTNERSHIP PROJECT (3GPP), MOBILE COMPETENCE CENTRE ; 650, ROUTE DES LUCIOLES ; F-06921 SOPHIA-ANTIPOLIS CEDEX ; FRANCE, vol. RAN WG1, no. Vancouver, Canada; 20180122 - 20180126, 13 January 2018 (2018-01-13), Mobile Competence Centre ; 650, route des Lucioles ; F-06921 Sophia-Antipolis Cedex ; France, XP051384907 *
See also references of EP4033800A4 *
VIVO: "Discussion on beam measurement, beam reporting and beam indication", 3GPP DRAFT; R1-1717472_DISCUSSION ON BEAM MEASUREMENT, BEAM REPORTING AND BEAM INDICATION, 3RD GENERATION PARTNERSHIP PROJECT (3GPP), MOBILE COMPETENCE CENTRE ; 650, ROUTE DES LUCIOLES ; F-06921 SOPHIA-ANTIPOLIS CEDEX ; FRANCE, vol. RAN WG1, no. Prague, CZ; 20171009 - 20171013, 8 October 2017 (2017-10-08), Mobile Competence Centre ; 650, route des Lucioles ; F-06921 Sophia-Antipolis Cedex ; France, XP051340660 *

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
TWI835088B (zh) * 2021-04-02 2024-03-11 大陸商大唐移動通信設備有限公司 一種測量上報方法及裝置
WO2024061241A1 (fr) * 2022-09-23 2024-03-28 Guangdong Oppo Mobile Telecommunications Corp., Ltd. Appareil et procédés de mesure et de rapport de faisceau d'interférence entre ue

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US20220303801A1 (en) 2022-09-22
CN112533230A (zh) 2021-03-19
AU2020348730A1 (en) 2022-05-12
CA3151592C (fr) 2024-02-27
EP4033800B1 (fr) 2024-06-12
AU2020348730B2 (en) 2023-04-20
JP2022548927A (ja) 2022-11-22
JP7324367B2 (ja) 2023-08-09
EP4033800A4 (fr) 2022-10-26
CN112533230B (zh) 2022-07-15
EP4033800A1 (fr) 2022-07-27
CA3151592A1 (fr) 2021-03-25

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